Kokkos::kokkos_swap#

Defined in header <Kokkos_Swap.hpp>(since 4.3) which is included from <Kokkos_Core.hpp>

template <class T>
KOKKOS_FUNCTION constexpr void
kokkos_swap(T& a, T& b) noexcept(std::is_nothrow_move_constructible_v<T> &&
                                 std::is_nothrow_move_assignable_v<T>);  // (1) (since 4.3)

template <class T2, std::size_t N>
KOKKOS_FUNCTION constexpr void
kokkos_swap(T2 (&a)[N], T2 (&b)[N]) noexcept(noexcept(*a, *b));  // (2) (since 4.3)

  1. Swaps the values a and b. This overload does not participate in overload resolution unless std::is_move_constructible_v<T> && std::is_move_assignable_v<T> is true.

  2. Swaps the arrays a and b. This overload does not participate in overload resolution unless T2 is swappable.

Notes#

kokkos_swap provides the same functionality as std::swap. It just cannot be called swap or it would yield some ambiguities in overload resolution in some situations because of ADL.